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#!/bin/bash
#SBATCH --job-name=multinode
#SBATCH -D .
#SBATCH --output=O-%x.%j
#SBATCH --error=E-%x.%j
#SBATCH --nodes=4 # number of nodes
#SBATCH --ntasks-per-node=1 # number of MP tasks
#SBATCH --gres=gpu:4 # number of GPUs per node
#SBATCH --cpus-per-task=160 # number of cores per tasks
#SBATCH --time=01:59:00 # maximum execution time (HH:MM:SS)
######################
### Set environment ###
######################
source activateEnvironment.sh
export GPUS_PER_NODE=4
######################
######################
#### Set network #####
######################
head_node_ip=$(scontrol show hostnames $SLURM_JOB_NODELIST | head -n 1)
######################
export LAUNCHER="accelerate launch \
--num_processes $((SLURM_NNODES * GPUS_PER_NODE)) \
--num_machines $SLURM_NNODES \
--rdzv_backend c10d \
--main_process_ip $head_node_ip \
--main_process_port 29500 \
"
export ACCELERATE_DIR="${ACCELERATE_DIR:-/accelerate}"
export SCRIPT="${ACCELERATE_DIR}/examples/complete_nlp_example.py"
export SCRIPT_ARGS=" \
--mixed_precision fp16 \
--output_dir ${ACCELERATE_DIR}/examples/output \
"
# This step is necessary because accelerate launch does not handle multiline arguments properly
export CMD="$LAUNCHER $PYTHON_FILE $ARGS"
srun $CMD
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